국내 인증 공기청정기 시험결과의 통계적 분석

김명운 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.2

Statistical analysis for the 703 air purifiers certified by Korea Air Cleaning Association from 2003 to 2019 was performed. Sixty-one percent of the products had an area coverage of 15 m2~30 m2 and the median value of the total products was 37.6 m2. The number of certified products by the top five manufacturers was 325, which corresponds to 46.2% of the total products. The median value of the clean air delivery rate (CADR) of the 703 products was 4.8 m3/min but the number of air purifiers over the value increased to 62.5%~66.3% since 2018. The odor removal ratio showed a median of 86.0% which was higher than the certification criteria but had large differences in efficacy in the five test compounds. Removal efficiencies of each compound in terms of the median and ratio to the average value showed acetate > formaldehyde > toluene > ammonia > acetaldehyde in descending order with large variances. The median noise level average value from five positions of air purifiers was 47.7 dB(A). However the medians of the top position and the front, where purified air was vented out, were relatively higher in 49.8 dB(A) and 48.2 dB(A), respectively. Noise level ratio to noise criteria had a median value of 96.4%, which showed that most of the noise levels were distributed near the criteria limit. The probability of the noise level at 100% of the criteria was calculated ton 0.232, which indicated excess noise levels.

UASB 반응조에 의한 석유화학폐수의 혐기성 처리

김명운 대진대학교 1996 大眞論叢 Vol.4 No.-

The removal efficiencies of petrochemical wastewater by upflow anaerobic sludge blanket reactor were average 74.6% and maximum 85.7%. pH was maintained between 6.7-7.4 which showed stable reactor conditions. Net production rate of metane and proportion of methane were 3.57L/m³·day and 77.7%, respectively. Other parameters about chemical state of reactor also confirmed stable activity of methanogenic bacteria. This result showed that anaerobic treatment of petrochemical wastewater and obtaining of methane gas from waste are possible. Futher studies about development of pretrement process, unit process, and methanogenic bacteria were required.

農藥의 殘留毒性

金明運 건국대학교 농과대학 연합학회 1967 건농 Vol.- No.1

全鰒殼을 利用한 活性酸化칼슘 製造에 關한 硏究

金明運 건국대학교 1981 學術誌 Vol.25 No.1

It determined ignition loss, solubility pH and toxicity from haliotis shell powder treated by temperature. The results were as follows. 1.It producted active calcium oxide from haliotis shell powder by means of high temperature treatment (700-1000℃). Especially increased its yield at 900℃. 2.The solubility increased due to temperature rising. 3.It's water solution is pH 10 and less at 500℃ under but is pH 12 and more at 600℃ over. 4.The rate of survival is 100 percentage in 5g an less and toxicity is none.

임진강 수계에서 소규모 저수지가 본류의 수질에 미치는 영향

김명운 대진대학교 2000 大眞論叢 Vol.8 No.-

Water quality of Imjin River was low as a raw water for drinking which should be at least 2nd grade. The reasons for low quality were polluted water from upstream Hantan River and high organic input from tributary. Self-purification process by the rapid and large quantity of river flow did not play an effective role. The main pollutant of tributary seemed to be non-point source from agricultural soil or forest rather than point source of anthropogenic or livestock wastewater. Small and middle sizes of reservoirs seemed to act as mitigation pond. The over-polluted reservoirs, however, act as a source of pollutant, especially at summer season. Heavy raining during the summer helps large input of suspended solids and recalcitrant from nearby soil or forest rather than dilution effect. It was needed that synthesized design for watershed area and continuous and extended administration.

O-Methoxy-phenol 誘導體의 合成 및 그 分析化學的 硏究

金明運 건국대학교 1970 學術誌 Vol.11 No.1

The synthetic method of 2-methoxy-5-mitrophenol with mixed acid was reported on Tapan patent (1965) and Korea patent (l964) The author experimented nitration of o-methoxy phenol with cone-nitric acid only, using for solvent with acetic acid. The results were shown in 〈Table 1,2〉 and 〈Fig 1,2〉. ① The author's experiment was more excellent than nitration with mixed acid in process, yield and purity. ② And, it was possible to synthesize various derivatives by substition of atom or atomic group. ③ Through the appearance, the distirction of 2-methoxy-5-nitophenylacetate and 2-methoxy-5-nitrophenol was possible. The said, both substance were identified by means of IR spectra element analysis and Melting Point determination.

貝殼(바지락·동죽)을 이용한 活性酸化칼슘 製造에 관한 硏究(2報)

金明運 建國大學校附設 農業資源開發硏究所 1982 論文集 Vol.7 No.-

바지락과 동죽의 殼을 微粉化하였을 때의 減量, 溶解度, pH의 變化 및 毒性에 관한 實驗結果를 다음과 같이 要約한다. 1. 바지락과 동죽殼粉末을 高溫處理(800∼1000℃)함으로써 酸化칼슘을 生成할 수 있으며 1000℃에서 收率이 컸다. 2. 處理溫度가 上昇함에 따라서 溶解度는 微量씩 增加한다. 3. 수용액의 pH는 약간씩 上昇하였다. 4. 高溫處理 貝殼粉末의 水溶液의 沮止效果가 크고 培養時間이 길수록 沮止效果가 低下되었다. It determined ignition loss solubility pH and inhibitory effect of microbos from shells powder treated by temperature. The results were as follows. 1. It produced active calcium oxide from shell. (Tapes phillippinarum, Mactra venerifonis) by means of high temperature treatment(800∼1000℃). Especially increased its yield at 1000℃. 2. The solubility increased due to temperature rising. 3. pH of water solution is increased slightly. 4. The growth inhibitory effect of the water solution is good. And the longer culture time is, the lower growth inhibitory effect is.

2-methoxy-5-nitrophenol과 그 ester 合成 및 應用에 관한 硏究

金明運 建國大學校附設 農業資源開發硏究所 1975 論文集 Vol.1 No.-

植物生長調性物質로 알려진 2-methoxy-5-nitrophenol의 合成, 確認定量法 및 微生物生長에 미치는 影響을 실험한 이 연구에서 o-methoxyphenol에 대한 nitro 化는 濃窒酸이나 混酸을 사용한 合成보고가 있으나 醋酸을 사용한 방법으로는 2-methoxy-5-nitrophenol뿐만 아니라 中間生成物인 2-methoxy-5-nitrophenylacetate를 合成할 수 있었고 benzoic acid와의 ester化도 可能하였다. 確認定量法으로서는 -NH₂基를 diazo化하는 방법으로 NO₂基를 還元하고 이것을 常法으로 diazo化 하므로써 相對誤差±0.97% 範圍에서 定量할 수 있었다. 동시에 methoxy基는 pregl의 微量分析法을 이용하여 相對誤差 ±0.59% 範圍에서 定量이 可能하였다. 吸光度光法에 있어서는 이 化合物의 酸解離定數를 구할 수 있었고 pH의 影響, 緩衝夜의 吸光度에 대한 影響및 吸收極大波長을 測定하여10∼50ppm 濃度에서 Beer의法則이 적용됨을 알 수 있었다. 2-methoxy-5-nitrophenol의 微生物生長에 미치는 影響은 Staphylococcus aureus에 대하여 低濃度에서 促進性을 보였고 0.6r 전후에서 가장 效果的이었다. 그리고 Hansenula anomala의 醱酵性도 促進하였고 4,000培부터 6,000培에서 가장 높았다. 本硏究는 産學財團의 支援으로 이루워진 것을 眞心으로 感謝하는 바이다. The synthesis of 2-methoxy-5-nitrophenol was investigated and its identification was made by its chemical properties, macro analysis and its growth regulative ability on several microorganisms. The results were as follows: 1. 2-methoxy-5-nitrophenol was prepared by the acetylation of o-methoxyphenol with acetic acid and the nitration of 2-methoxy-5-nitro-phenylacetate. 2-methoxy-5-nitrophenyl was prepared by the esterification with benzonic acid. 2. The identification and determination of 2-methoxy-5-nitrophenol was made by the diazo method and determination of the methoxy radical. 3. The ionization constant(Ka) of acid for this substance at 262mμ,344mμand 412mμwas 7.94×?? (Ka= 7.94×?? ) 4. The wave lengths for maximum absorption of 2-methoxy-5-nitrophenol in chloroform were 297μand 335mμ. 5. The wave lengths for maximum absorption of 2-methoxy-5-nitrophenol in an aqueous solution were 321mμ,412mμ, and 383mμ. The changes in the absorption curve for the pH values are shown in Fig. 4.The isos bestic points were discovered at 280mμ and 383mμ. 6. The mixture,in which 2-methoxy-5-nitrophenol was contained, was thoroughly soluble in chlroform below pH 6 but transferred completely into a water phase above pH 12.The transmittance percentage of 2-methoxy-5-nitrophenol increased with the third extractions. 7. The wavelengths of the buffer solutions were not affected above 250mμ.The determination of 2-methoxy-5-nitrophenol was possible without the influence of time on absorption as shown in figure 11 and Figure 12 at level raging 10ppm to 50ppm. 8. The growth of Staphylococcus aureus was inhibited to some extent by 2-methoxy-5-nitrophenol at concentrations of 6×10²r. It did not inhibit Staphylococcus aureus in more diluted concentrations. At a concentration of about 0.6r 2-methoxy-5-nitrophenol showed growth promotive properties of Staphylococcus aureus. 9. The growth promotive ability of a solution containing, o-nitrophenol, p-nitrophenol, 2, 4-dinitrophenol and 2-methoxy-5-nitrophenol was greater than the 2-methoxy-5-nitrophenol solution. 10. The fermentation ability of Hansenula anomala was promoted by 2-methoxy-5-nitrophenol and increased at dilution levels ranging 1×4000 to 7×1000.

Cyanobacteria 의 증식에 따른 대청호 생태계내의 생물군집 변화

김명운,김민호,조장천,김상종 ( Myeong Woon Kim,Min Ho Kim,Jang Cheon Cho,Sang Jong Kim ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1

The changes of primary producer, zooplankton, and characteristics of bacterial community were compared with the bloom of Microcystis aeruginosa in the Chusori, Daechung Reservoir where conventional summer bloom was observed. Primary producer changed from diatoms at spring to M. aeruginosa with the concentration of 4.6x10^8 cells 1^-1 at summer. Zooplankton changed into large-sized copepod. Difference of the total bacterial number between pre-bloom and blooming period was not large. The saprophytic number was average of 1.27×10^4CFUS ml^-1 that was 0.12% of the total bacterial number. Bacterial production rate was 3.95㎍C1^-1hr^-1 before July and 2.77㎍gC 1^-1hr^-1 during blooming period. Characteristics of bacterial community showed bacteria did not readily use increased organic compound.

韓國産 Zeolite에 關한 硏究

金明運 건국대학교 1978 學術誌 Vol.22 No.1

It is determinated cation exchange capacity, chemical composition and classified by X-ray diffraction analysis. And then Chryanthemum was cultivated in soil mixed with zeolite, with vermiculite, with zeolite and vermiculite together and in non-treated soil. The results were as follow ; 1) Korean zeolite is high silica type, higher in cation exchange capacity. 2) It belong to clinoptilolits and mordenite group, and is high purity. 3) The coil mixed with zeolite and vermiculite together is more effective. 4) In soil mixed with clay minerals 3% or 5%, its growth is effective.